<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <h2>Hello world</h2>
    <button onclick="onClick">添加</button>
</body>
<script>
    const axios = require('axios')
    function onClick () {
        console.log(axios)
    }
 </script>
</html>